| Part Number | LM137K | LM138K |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Category | PMIC - Voltage Regulators - Linear | PMIC - Voltage Regulators - Linear |
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| Product Status | Obsolete | Obsolete |
| Output Configuration | Negative | Positive |
| Output Type | Adjustable | Adjustable |
| Number of Regulators | 1 | 1 |
| Voltage - Input (Max) | 40V | 35V |
| Voltage - Output (Min/Fixed) | -1.2V | 1.2V |
| Voltage - Output (Max) | -37V | 32V |
| Voltage Dropout (Max) | - | - |
| Current - Output | 1.5A | 5A |
| Current - Quiescent (Iq) | - | - |
| Current - Supply (Max) | - | - |
| PSRR | 77dB ~ 60dB (120Hz) | 75dB ~ 60dB (120Hz) |
| Control Features | - | - |
| Protection Features | Over Current, Over Temperature | Over Current, Over Temperature |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 150°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | TO-204AA, TO-3 | TO-204AA, TO-3 |
| Supplier Device Package | TO-3 | TO-3 |